Operating instructions

Function selector: Drilling and breaking

● Drilling

Turn the function selector downwards. This will

engage rotation and flushing air.

● Breaking

To adjust the direction of the tool blade, put the

function selector in the neutral position.

● Locked position

Lock the tool blade in the desired position by

turning the selector upwards. The rotation

mechanism is now locked.

Drilling

1. Before drilling, check that the flushing hole in the

drill steel is not blocked.

2. Stand in a stable position with your feet well away

from the inserted tool.

3. Press the inserted tool against the place where

you wish to drill.

4. Increase the engine speed once the drill bit has

collered a footing in the material.

5. Grip the side handle for better control of the

machine.

Number of revs

The engine speed is regulated by means of the

throttle lever:

SpeedThrottle lever

Idling speedLever released

Full engine speedLever depressed

Ground probing

If the machine is started on the top of long tools such

as probing rods, a starter-cord bracket must be used

to prevent the cord from damaging the fuel tank.

Drilling deep holes

1. Use a short drill and then fully drill into the hole.

2. Change to a longer drill with a slightly smaller bit

diameter (approx. 1mm smaller).

Original instructions

Safety and operating instructionsCOBRA COMBI